The purpose of this project is to improve the performance of the Deck Shock Simulating Shock Machine (DSSM) 25Hz spring tray.


The scope of the work is to: 1) design, fabricate, and install thicker and wider custom machined fitted washers to reduce flexibility when the springs are extending; 2) design, fabricate, and install custom shims to be placed between the spring tray structure and the tempered round bar where it begins to slant upward and downward to reduce flexibility at the connections when the springs are compressing; 3) test spring performance with and without washers and shims installed; 4) compare results with previous 25Hz DSSM spring tray data and heavyweight 25Hz deck testing data; and 5) assess the DSSM latch assemblies and design an adjustment mechanism that will achieve optimum latch grip for all spring trays.

Key Deliverables / Benefits:

Quarterly status reports and final report documenting DSSM performance improvements as well as presentations at workshops to showcase results.

Point of Contact:

Michael Talley | HII-NNS | michael.talleyh@hii-nns.com


Planning, Production Processes & Facilities

Project Team:

  • (HII-NNS) Huntington Ingalls Industries – Newport News Shipbuilding

March 2023 – March 2024